DCA (Sodium dichloroacetate), a specific inhibitor of pyruvate dehydrogenase kinase (PDK) with IC50 values of 183 and 80 μM for PDK2 and PDK4 respectively, has been shown to derepress Na+-K+-2Cl- cotransporter and a mitochondrial potassium-ion channel axis. Sodium dichloroacetate increases reactive oxygen species (ROS) generation, triggers apoptosis in cancer cells, and inhibits tumor growth.